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In this activity, learners work with an adult to build a rocket and launcher out of a plastic 2-liter bottle, flexible plastic hose, plastic tubing, toilet paper tube, and duct tape.

$5 - $10 per group Ages 6 - 14 30 to 45 minutes
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Create 3D glasses and use them to explore color, light and optics. Fool your brain into 'seeing' three dimensions on a flat surface!

1 cent - $1 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners use multiple thermometers, placed at different angles, and a lamp to investigate why some places on Earth's surface are much hotter than others.

$5 - $10 per group Ages 8 - adult 10 to 30 minutes
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In this activity, learners will simulate the interactions between a predator population of gray wolves and a prey population of deer in a forest.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this biology activity (page 5 of the PDF), learners use yarn and sticky labels to build a model of a DNA strand. They discover that DNA is very long, very skinny, and packs well into cells.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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This is an activity about a very important ingredient in most baked goods - gluten! Why is gluten so important? Without it, there would be nothing to hold the gas that makes bread rise.

$1 - $5 per group Ages 11 - adult 45 to 60 minutes
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In this activity, learners extract DNA from wheat germ. Use this activity to introduce learners to DNA, biotechnology and genetic engineering.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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In this design challenge, learners will create wind-powered contraptions to transport a load, such as a cupcake or another small object, and test to see if they work.

$5 - $10 per student Ages 6 - adult 30 to 45 minutes
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Learners add drops of four liquids (water, alcohol, salt water, and detergent solution) to different surfaces and observe the liquids' behavior.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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Fat is a very important component in our diet. It's the most efficient source of energy in our bodies, and plays an important role in the flavor of foods.

$1 - $5 per group Ages 11 - 18 10 to 30 minutes
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Learners observe projectile motion by launching wooden balls off of a table top. They set up a rubber-band launcher so that each ball experiences a consistent amount of force.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners hook up a hair to a lever system and create a hair hygrometer to measure changes in humidity.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners cut out a fish and then "paint" it using universal indicator and acids and bases.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners discover that some things only stand up while they are spinning.

$1 - $5 per student Ages 8 - 14 1 to 2 hours
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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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This activity was designed for blind learners, but all types of learners can use it to organize an interactive model for learning the classification system (taxonomy) of living things.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

free Ages 6 - 14 5 to 10 minutes
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In this chemistry demonstration, learners will discover that phenolphthalein is a chemical that displays different colors depending on the acidity or basicity of the environment.

$5 - $10 per group Ages 6 - 18 Under 5 minutes
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In this activity (on page 2 of the PDF), the learner places a golf ball between salt water and colored fresh water. The golf ball is not as dense as the saltwater.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes